Fig. 3: Electrolysis in the switching CO/Ar atmosphere on Cu(OD)0.8Ag0.2.

Faradaic efficiency of multi-carbon liquid products and ethylene. The red circles show the corresponding Faradaic efficiency ratio of multi-carbon liquid products to ethylene. Constant current electrolysis at 100 mA cm−2 is conducted on Cu(OD)0.8Ag0.2 with switching inlet gas between CO and Ar at different frequencies (switch CO/Ar every 60, 30, 10, 5, and 0 seconds).